My husband sells bulletproof clipboards through his website ballisticsystemsco.com He uses paypal and has only had one issue in over two years ... a shipment to Canada, which he replaced. Apparently as difficult as our postal system is, theirs is sometimes worse. Never sold on Ebay, but bought a lot through the years and had no issues.
However, caution with Craigslist. We have listed a high-end bicyle, a boat and a waverunner and got very strange checks -- usually for several hundred dollars more. Once got counterfeit US Postal money orders that even our local post office could not see as fraudulent. Lots of foreign crooks are our experience with Craigslist. However, have successfully sold items, including he boat and bike. Just be cautious!